package com.censtar.criminalintent;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.provider.MediaStore;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.content.FileProvider;
import android.text.Editable;
import android.text.TextWatcher;
import android.text.format.DateFormat;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ImageView;

import com.censtar.criminalintent.utils.PictureUtils;

import java.io.File;
import java.util.Date;
import java.util.List;
import java.util.UUID;

public class CrimeFragment extends Fragment {
    private static final String ARG_CRIME_ID = "crime_id";
    private static final String DIALOG_DATE = "DialogDate";
    private static final int REQUEST_DATE = 0;
    private static final int REQUEST_CONTACT = 1;
    private static final int REQUEST_PHOTO = 2;
    private Crime mCrime;
    private File mPhotoFile;
    private EditText mTitleField;
    private Button mDateButton;
    private CheckBox mSolvedCheckBox;
    private Button mReportButton;
    private Button mSuspectButton;

    private ImageButton mPhotoButton;
    private ImageView mPhotoView;
    private Callbacks mCallbacks;
    public interface Callbacks{
        void onCrimeUpdated(Crime crime);
    }

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        mCallbacks = (Callbacks) context;
    }

    @Override
    public void onDetach() {
        super.onDetach();
        mCallbacks = null;
    }

    public static CrimeFragment newInstance(UUID crimeId){
        Bundle args = new Bundle();
        args.putSerializable(ARG_CRIME_ID,crimeId);
        CrimeFragment fragment = new CrimeFragment();
        fragment.setArguments(args);
        return fragment;
    }

    /**
     * fragment的视图并没有在Fragment.onCreate(Bundle)方法中生成
     * @param savedInstanceState
     */
    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        UUID crimeId = (UUID) getArguments().getSerializable(ARG_CRIME_ID);
        mCrime = CrimeLab.get(getActivity()).getCrime(crimeId);
        mPhotoFile = CrimeLab.get(getActivity()).getPhotoFile(mCrime);
    }

    @Override
    public View onCreateView( LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.fragment_crime,container,false);
        mTitleField = v.findViewById(R.id.crime_title);
        mTitleField.setText(mCrime.getTitle());
        mTitleField.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {
                    mCrime.setTitle(s.toString());
                    updateCrime();
            }

            @Override
            public void afterTextChanged(Editable s) {

            }
        });

        mDateButton = v.findViewById(R.id.crime_date);
        updateDate();
        mDateButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                FragmentManager manager = getFragmentManager();
                DatePickerFragment dialog = DatePickerFragment.newInstance(mCrime.getDate());
                dialog.setTargetFragment(CrimeFragment.this,REQUEST_DATE);
                dialog.show(manager,DIALOG_DATE);
            }
        });

        mSolvedCheckBox = v.findViewById(R.id.crime_solved);
        mSolvedCheckBox.setChecked(mCrime.isSolved());
        mSolvedCheckBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                mCrime.setSolved(isChecked);
                updateCrime();
            }
        });
        mReportButton = v.findViewById(R.id.crime_report);
        mReportButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent i = new Intent(Intent.ACTION_SEND);
                i.setType("text/plain");
                i.putExtra(Intent.EXTRA_TEXT, getCrimeReport());
                i.putExtra(Intent.EXTRA_SUBJECT,getString(R.string.crime_report_subject));
                i = Intent.createChooser(i,getString(R.string.send_report));

                startActivity(i);
            }
        });
        final Intent pickContact = new Intent(Intent.ACTION_PICK,ContactsContract.Contacts.CONTENT_URI);

        mSuspectButton = v.findViewById(R.id.crime_suspect);
        mSuspectButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivityForResult(pickContact,REQUEST_CONTACT);
            }
        });
        if(mCrime.getSuspect() != null){
            mSuspectButton.setText(mCrime.getSuspect());
        }

        PackageManager packageManager = getActivity().getPackageManager();
        if(packageManager.resolveActivity(pickContact,PackageManager.MATCH_DEFAULT_ONLY)==null){
            mSuspectButton.setEnabled(false);
        }

        mPhotoButton = v.findViewById(R.id.crime_camera);
        mPhotoView = v.findViewById(R.id.crime_photo);

        final Intent captureImage = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        boolean canTakePhoto = mPhotoFile != null && captureImage.resolveActivity(packageManager) !=null;
        mPhotoButton.setEnabled(canTakePhoto);
        mPhotoButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Uri uri = FileProvider.getUriForFile(getActivity(),
                        "com.censtar.criminalintent.fileprovide",
                        mPhotoFile);
                captureImage.putExtra(MediaStore.EXTRA_OUTPUT,uri);
                List<ResolveInfo> cameraActivities = getActivity()
                        .getPackageManager().queryIntentActivities(captureImage,
                                PackageManager.MATCH_DEFAULT_ONLY);
                for(ResolveInfo activity : cameraActivities){
                    getActivity().grantUriPermission(activity.activityInfo.packageName,
                            uri,Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
                }
                startActivityForResult(captureImage,REQUEST_PHOTO);
            }
        });
        updatePhotoView();
        return v;
    }
    public void returnResult(){
        getActivity().setResult(Activity.RESULT_OK,null);
    }

    @Override
    public void onPause() {
        super.onPause();
        CrimeLab.get(getActivity())
                .updateCrime(mCrime);
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        if(resultCode != Activity.RESULT_OK){
            return;
        }
        if (requestCode == REQUEST_DATE) {
             Date date  =(Date)data.getSerializableExtra(DatePickerFragment.EXTRA_DATE);
            mCrime.setDate(date);
            updateCrime();
            updateDate();
        }else if(requestCode == REQUEST_CONTACT && data!=null){
            Uri contactUri = data.getData();
            String[] queryFields = new String[]{
              ContactsContract.Contacts.DISPLAY_NAME
            };
            Cursor cursor = getActivity().getContentResolver().query(contactUri,queryFields,null,null,null);

            try {
                if(cursor.getCount() == 0){
                    return;
                }
                cursor.moveToFirst();
                String suspect = cursor.getString(0);
                mCrime.setSuspect(suspect);
                updateCrime();
                mSuspectButton.setText(suspect);
            }finally {
                cursor.close();
            }
        }else if(requestCode == REQUEST_PHOTO){
            Uri uri = FileProvider.getUriForFile(getActivity(),
                    "com.censtar.criminalintent.fileprovide",
                    mPhotoFile);
            getActivity().revokeUriPermission(uri,Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
            updateCrime();
            updatePhotoView();
        }
    }
    private void updateCrime(){
        CrimeLab.get(getActivity()).updateCrime(mCrime);
        mCallbacks.onCrimeUpdated(mCrime);
    }
    private void updateDate() {
        mDateButton.setText((String)DateFormat.format("EEEE, MMMM dd日, yyyy kk:mm", mCrime.getDate()));
    }

    private String getCrimeReport(){
        String solvedString = null;
        if(mCrime.isSolved()){
            solvedString = getString(R.string.crime_report_solved);
        }else {
            solvedString = getString(R.string.crime_report_unsolved);
        }

        String dateFormat = "EEE,MMM dd";
        String dateString = DateFormat.format(dateFormat,mCrime.getDate()).toString();
        String suspect = mCrime.getSuspect();
        if(suspect == null){
            suspect = getString(R.string.crime_report_no_suspect);
        }else {
            suspect = getString(R.string.crime_report_suspect,suspect);
        }
        String report = getString(R.string.crime_report,mCrime.getTitle(),dateString,solvedString,suspect);
        return report;
    }
    private void updatePhotoView(){
        if(mPhotoFile == null || !mPhotoFile.exists()){
            mPhotoView.setImageDrawable(null);
        }else {
            Bitmap bitmap = PictureUtils.getScaledBitmap(
                    mPhotoFile.getPath(),getActivity()
            );
            mPhotoView.setImageBitmap(bitmap);
        }
    }
}
